首页
登录
职称英语
If the population of the Earth goes on increasing at its present rate, there
If the population of the Earth goes on increasing at its present rate, there
游客
2023-08-20
36
管理
问题
If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to【B1】_____life on the planet. By the middle of the 21st century, if present trends continue, we will have【B2】_____all the oil that drives our cars, for example. Even if scientists develop new ways of 【B3】_____the human race, the crowded conditions on Earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our【B4】_____ are capable of supporting life at present. One possible solution to the problem has recently been suggested by an American scientist, Prof. Carl Sagan.
Prof. Sagan believes that before the earth’s resources are completely【B5】_____, it will be possible to change the atmosphere of Venus and so create a new world almost as large as Earth itself.
Sagan proposes that algae(藻类), an【B6】_____that can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be【B7】_____in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will then fly to Venus and fire the rockets into the atmosphere. In a【B8】_____short time, the algae will【B9】_____the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler. The oxygen will produce rain and in a few years something like Earth will be【B10】_____on Venus. [br] 【B2】
选项
答案
used up
解析
根据空格所在位置可知,空格处应填入动词(词组)。结合录音可填入used up,意为“用尽”。
转载请注明原文地址:https://tihaiku.com/zcyy/2942025.html
相关试题推荐
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
[originaltext]SekouCoumbassaisadiplomatwhorepresentsoneofthenewA
[originaltext]M:IsthereaneedtocontrolpopulationonlyincountrieslikeI
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
随机试题
Withthepossibleexceptionofequalrights,perhapsthemostcontroversial
Forthispart,youareallowed30minutestowriteanessayexplainingwhypeopl
HowSafeIsYourCellPhone?A)Ittakesalittleextrawork
从运输供给来看,有效运输供给()总的运输供给。A.小于 B.大于 C.等
分区管理中采用“最佳适应”分配算法时,宜把空闲区按()次序登记在空闲区表中。A.
机房建设是系统集成工程中重要内容之一,()一般不属于机房建设的规范。A.楼
某一件事情可能出现不同的情况,各种情况对应各自的概率,各种概率之和( )。A.大
患者男,高血压50年,一天前出现端坐呼吸,咳嗽,诊断为心力衰竭,查体可闻及舒张早
共用题干 LearnAboutNobleGases(惰性气体)1Hav
人类的和平共处是一个不可实现的理想,统计数字显示,自1945年以来,每天有12场
最新回复
(
0
)